Light-signal support



June 10, 1930.

E. A. EVERETT LIGHT SIGNAL SUPPORT Filed Aug. 24, 1928 INVENTOR.

Patented June 10, 1930 UNITED STATES EDWARD A. EVERETT, OE LONG ISLANDCITY, NEW YORK LIGHT-SIGNAL SUPPORT Application filed August 24, 1928.Serial N'o. 301,881.

This invention relates to signal lights and has for an object to providelights of this type adapted for electric lighting by a dctachablereflector and light bulb and a further object of the invention is toprovide a light support by a ball and socket connection which isuniversally adjustable; other objects of the invention will appear fromthe following specification and the accompanying drawings in which, Fig.1, is a front elevation of a signal light embodying my invention andFig. 2 is a sectional view taken on the centre of the source ofillumination and on the centre of the ball and socket support.

It is common practice to provide headlights with reflectors supportingan electric bulb on the axial centre of the reflector and so arrangedthat the bulb and reflector are an integral unit. In the presentinvention this reflector combination is used, but the reflector isdetachable, having a flange on its outer edge engaging a groove in thehousing and held on this seat by a spring so that the bulb and reflectorare easily removed through the door of the housing.

It is established practice to support lamp housings of this type by aright angle bracket, the vertical portion of which usu ally slides in, agroove of the housing. In order to obtain a universal adjustment for thedirection of the beam projected from this lamp, I provide a ball andsocket mounting for the housing which is adapted to slide on thevertical arm of the bracket and may be clampedin any position thereon.This signal light may be applied to the existing lamp brackets onsemaphore signals thereby securing a universal adjustment in thedirection of the projected beam.

In the drawings 11 is the lamp bracket, usually clamped to a semaphoresignal, which terminates in the vertical arm 12. This bracket isrectangular in section as indicated in Fig. 2 and has the cleat 13slidably mounted thereon and clamped in position by the set screw 14. Aprojection 16 formed integral with the cleat engages the pad 17 of thebracket to act as a stop in the downward movement of the cleat.

The signal light is indicated at 18 with the roundel 19 and with thedoor 20 openin to the rear to expose the interior, the g ass roundel 21closes the opposite end of the.

housing. The reflector 22 has an outwardly formed flange at 51 on itsouter edge which seats in the groove 52 of the housing. The reflector isformed in two stages of curvature as indicated at 22 and 23 to make theprojected light effective over a long range. The reflector is formed ina socket at 25 which receives the insulated bushing 26 supporting thebase of the lamp bulb 24 in the axlal line of the reflector. These partsare clamped together by the clamp 25 and the position of the bulb isadjustable relative to the reflector. The terminal block 27 may be usedto make the electrical connections to the lamps.

The cleat 13 is formed with a concavoconvex projection terminating inthe spherical surface 15 and which engages a corresponding concavespherical surface at 31 formed in the side of the housing. A brass orbronze plate 33 formed to the. spherical contour is placed on the cleatand a corresponding plate 32 is placed against the housing. These platesform the bearing surfaces between the engaging parts and when applied inthis way it is not necessary to machine or finish these surfaces andrusting is substantially avoided.

The bolt 38 secures the cleat to the housing and is tightened by thevnut 35 on the inside of the housing. An aperture is formed at 36 in theoutside wall of the cleat for entering the head of the bolt which isprovided with spherical shoulders at 34 to match the concave sphericalsurface of the cleat. When in position, it will be noted that the bolthead clears the bracket 12 and a free movement is provided for the boltin the cleat as the cleat is moved out of parallel relation with thehousing.

Ball and socket mountings have been preposed for signal lights but thepresent invention embodies the novel feature of securing this mountingin a slidable cleat and which is secured to the side of the signaldevice.

ture.

Having thus described my invention, I claim:

In a light signal support, the combination, a lamp bracket comprising asolid rectangular vertical member, a cleat with a rectangular openingsliding on said vertical member and clamped thereto and having on oneside a spherical projection with an aperture for a bolt on the axis ofthe sphere and having an aperture for a bolt head in the outer wall ofthe cleat opposite said spherical projection, a housing having aspherical depression on its side matching the spherical projection ofsaid cleat, said cleat being secured to said housing by a bolt passingthrough said apertures with the head located in the depression formedwithin the spherical projection of the cleat and prevent-- ed fromfalling out of said cleat by said vertical member.

In testimony whereof I afiix my signa- EDWARD A. EVERETT.

